code: def flatten_list(array):
      """Flattens an array by removing 1 level of nesting.
  
      Parameters
      ----------
      array : `list` [`list`]
          List of lists.
  
      Returns
      -------
      flat_arr : `list`
          Removes one level of nesting from the array.
          [[4], [3, 2], [1, [0]]] becomes [4, 3, 2, 1, [0]].
      """
      return [item for sublist in array for item in sublist]
  
imports: import copy
  import dataclasses
  import functools
  import math
  import re
  import warnings
  from dataclasses import field
  from typing import List
  import numpy
  import pandas
  from pandas.testing import assert_frame_equal
  from pandas.testing import assert_index_equal
  from pandas.testing import assert_series_equal
label_desc: Use image node_id 10 for calling a global function with example usage: flatten_list(array) and returns: unknown